Re: Slow PL/pgSQL 8.0.RC5 (7.4.6. 3times faster)

On Thu, Jan 13, 2005 at 05:05:00PM -0500, Tom Lane wrote:
> Pavel Stehule <stehule(at)kix(dot)fsv(dot)cvut(dot)cz> writes:
> >> And?
> >>
> >> (ie, what test case are you talking about?)
>
> > This test is function for searching max factor. It is speaking only about
> > quality of interpret an language. I would ask why?
>
> So I can replicate your test.

SELECT delitel(1000000, 1);

Mean times over the last five of six runs on my poor 500MHz FreeBSD
4.11-PRERELEASE box:

6741 ms 7.4.6 (from FreeBSD ports collection)
14427 ms 8.0.0rc5 (from CVS source)

I remembered that I had build 8.0.0rc5 with --enable-debug so I
rebuilt it without that option, not sure if that would make a
difference. The mean time increased by 8% to 15580 ms, which was
opposite from what I expected. I re-ran the 7.4.6 tests and they
came out the same as they had before.

I'm not sure what optimization flags (if any) the ports build of
7.4.6 might have used. I can take a closer look if you think it
matters.

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/